import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import User from '../components/user/User.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
Vue.use(VueRouter)

const router = new VueRouter({
    routes: [
        { path: '/', redirect: '/login' },
        {
            path: '/login',
            component: Login
        }, {
            path: '/home',
            component: Home,
            redirect: '/welcome',
            children: [
                { path: '/welcome', component: Welcome },
                { path: '/users', component: User },
                { path: '/rights', component: Rights },
                { path: '/roles', component: Roles },
                { path: '/categories', component: Cate }
            ]

        }
    ]
});
// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
    // to 将要访问的路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数，表示放行
    //     next()  放行    next('/login')  强制跳转

    if (to.path === '/login') return next()
        // 获取token
    const tokenStr = window.sessionStorage.getItem('token')
    if (!tokenStr) return next('/login')
    next()
})
export default router